HI

I had surgery in april for patella displacia where Mr Sweetnam built an anchor ligament to keep my Patella in place as it displaces easily. I have no patella groove.
It hasnt worked and i am still displasing hen i bend my knee. He mentioned this surgery but its controversial from what i can make out, so whilst im waiting for a second opinion from the doctors that perform the surgery, I was wondering if anyone could help me at all.

Thanks